Protoization.
[deliverable/binutils-gdb.git] / gdb / f-lang.c
1 /* Fortran language support routines for GDB, the GNU debugger.
2 Copyright 1993, 1994, 1996, 2000 Free Software Foundation, Inc.
3 Contributed by Motorola. Adapted from the C parser by Farooq Butt
4 (fmbutt@engage.sps.mot.com).
5
6 This file is part of GDB.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 #include "defs.h"
24 #include "gdb_string.h"
25 #include "symtab.h"
26 #include "gdbtypes.h"
27 #include "expression.h"
28 #include "parser-defs.h"
29 #include "language.h"
30 #include "f-lang.h"
31 #include "valprint.h"
32
33 /* The built-in types of F77. FIXME: integer*4 is missing, plain
34 logical is missing (builtin_type_logical is logical*4). */
35
36 struct type *builtin_type_f_character;
37 struct type *builtin_type_f_logical;
38 struct type *builtin_type_f_logical_s1;
39 struct type *builtin_type_f_logical_s2;
40 struct type *builtin_type_f_integer;
41 struct type *builtin_type_f_integer_s2;
42 struct type *builtin_type_f_real;
43 struct type *builtin_type_f_real_s8;
44 struct type *builtin_type_f_real_s16;
45 struct type *builtin_type_f_complex_s8;
46 struct type *builtin_type_f_complex_s16;
47 struct type *builtin_type_f_complex_s32;
48 struct type *builtin_type_f_void;
49
50 /* Following is dubious stuff that had been in the xcoff reader. */
51
52 struct saved_fcn
53 {
54 long line_offset; /* Line offset for function */
55 struct saved_fcn *next;
56 };
57
58
59 struct saved_bf_symnum
60 {
61 long symnum_fcn; /* Symnum of function (i.e. .function directive) */
62 long symnum_bf; /* Symnum of .bf for this function */
63 struct saved_bf_symnum *next;
64 };
65
66 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
67 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
68
69 /* Local functions */
70
71 extern void _initialize_f_language (void);
72 #if 0
73 static void clear_function_list (void);
74 static long get_bf_for_fcn (long);
75 static void clear_bf_list (void);
76 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
77 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
78 static void add_common_entry (struct symbol *);
79 static void add_common_block (char *, CORE_ADDR, int, char *);
80 static SAVED_FUNCTION *allocate_saved_function_node (void);
81 static SAVED_BF_PTR allocate_saved_bf_node (void);
82 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
83 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
84 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
85 #endif
86
87 static struct type *f_create_fundamental_type (struct objfile *, int);
88 static void f_printstr (struct ui_file * stream, char *string,
89 unsigned int length, int width,
90 int force_ellipses);
91 static void f_printchar (int c, struct ui_file * stream);
92 static void f_emit_char (int c, struct ui_file * stream, int quoter);
93
94 /* Print the character C on STREAM as part of the contents of a literal
95 string whose delimiter is QUOTER. Note that that format for printing
96 characters and strings is language specific.
97 FIXME: This is a copy of the same function from c-exp.y. It should
98 be replaced with a true F77 version. */
99
100 static void
101 f_emit_char (register int c, struct ui_file *stream, int quoter)
102 {
103 c &= 0xFF; /* Avoid sign bit follies */
104
105 if (PRINT_LITERAL_FORM (c))
106 {
107 if (c == '\\' || c == quoter)
108 fputs_filtered ("\\", stream);
109 fprintf_filtered (stream, "%c", c);
110 }
111 else
112 {
113 switch (c)
114 {
115 case '\n':
116 fputs_filtered ("\\n", stream);
117 break;
118 case '\b':
119 fputs_filtered ("\\b", stream);
120 break;
121 case '\t':
122 fputs_filtered ("\\t", stream);
123 break;
124 case '\f':
125 fputs_filtered ("\\f", stream);
126 break;
127 case '\r':
128 fputs_filtered ("\\r", stream);
129 break;
130 case '\033':
131 fputs_filtered ("\\e", stream);
132 break;
133 case '\007':
134 fputs_filtered ("\\a", stream);
135 break;
136 default:
137 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
138 break;
139 }
140 }
141 }
142
143 /* FIXME: This is a copy of the same function from c-exp.y. It should
144 be replaced with a true F77version. */
145
146 static void
147 f_printchar (int c, struct ui_file *stream)
148 {
149 fputs_filtered ("'", stream);
150 LA_EMIT_CHAR (c, stream, '\'');
151 fputs_filtered ("'", stream);
152 }
153
154 /* Print the character string STRING, printing at most LENGTH characters.
155 Printing stops early if the number hits print_max; repeat counts
156 are printed as appropriate. Print ellipses at the end if we
157 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
158 FIXME: This is a copy of the same function from c-exp.y. It should
159 be replaced with a true F77 version. */
160
161 static void
162 f_printstr (struct ui_file *stream, char *string, unsigned int length,
163 int width, int force_ellipses)
164 {
165 register unsigned int i;
166 unsigned int things_printed = 0;
167 int in_quotes = 0;
168 int need_comma = 0;
169 extern int inspect_it;
170
171 if (length == 0)
172 {
173 fputs_filtered ("''", gdb_stdout);
174 return;
175 }
176
177 for (i = 0; i < length && things_printed < print_max; ++i)
178 {
179 /* Position of the character we are examining
180 to see whether it is repeated. */
181 unsigned int rep1;
182 /* Number of repetitions we have detected so far. */
183 unsigned int reps;
184
185 QUIT;
186
187 if (need_comma)
188 {
189 fputs_filtered (", ", stream);
190 need_comma = 0;
191 }
192
193 rep1 = i + 1;
194 reps = 1;
195 while (rep1 < length && string[rep1] == string[i])
196 {
197 ++rep1;
198 ++reps;
199 }
200
201 if (reps > repeat_count_threshold)
202 {
203 if (in_quotes)
204 {
205 if (inspect_it)
206 fputs_filtered ("\\', ", stream);
207 else
208 fputs_filtered ("', ", stream);
209 in_quotes = 0;
210 }
211 f_printchar (string[i], stream);
212 fprintf_filtered (stream, " <repeats %u times>", reps);
213 i = rep1 - 1;
214 things_printed += repeat_count_threshold;
215 need_comma = 1;
216 }
217 else
218 {
219 if (!in_quotes)
220 {
221 if (inspect_it)
222 fputs_filtered ("\\'", stream);
223 else
224 fputs_filtered ("'", stream);
225 in_quotes = 1;
226 }
227 LA_EMIT_CHAR (string[i], stream, '"');
228 ++things_printed;
229 }
230 }
231
232 /* Terminate the quotes if necessary. */
233 if (in_quotes)
234 {
235 if (inspect_it)
236 fputs_filtered ("\\'", stream);
237 else
238 fputs_filtered ("'", stream);
239 }
240
241 if (force_ellipses || i < length)
242 fputs_filtered ("...", stream);
243 }
244
245 /* FIXME: This is a copy of c_create_fundamental_type(), before
246 all the non-C types were stripped from it. Needs to be fixed
247 by an experienced F77 programmer. */
248
249 static struct type *
250 f_create_fundamental_type (struct objfile *objfile, int typeid)
251 {
252 register struct type *type = NULL;
253
254 switch (typeid)
255 {
256 case FT_VOID:
257 type = init_type (TYPE_CODE_VOID,
258 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
259 0, "VOID", objfile);
260 break;
261 case FT_BOOLEAN:
262 type = init_type (TYPE_CODE_BOOL,
263 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
264 TYPE_FLAG_UNSIGNED, "boolean", objfile);
265 break;
266 case FT_STRING:
267 type = init_type (TYPE_CODE_STRING,
268 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
269 0, "string", objfile);
270 break;
271 case FT_CHAR:
272 type = init_type (TYPE_CODE_INT,
273 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
274 0, "character", objfile);
275 break;
276 case FT_SIGNED_CHAR:
277 type = init_type (TYPE_CODE_INT,
278 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
279 0, "integer*1", objfile);
280 break;
281 case FT_UNSIGNED_CHAR:
282 type = init_type (TYPE_CODE_BOOL,
283 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
284 TYPE_FLAG_UNSIGNED, "logical*1", objfile);
285 break;
286 case FT_SHORT:
287 type = init_type (TYPE_CODE_INT,
288 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
289 0, "integer*2", objfile);
290 break;
291 case FT_SIGNED_SHORT:
292 type = init_type (TYPE_CODE_INT,
293 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
294 0, "short", objfile); /* FIXME-fnf */
295 break;
296 case FT_UNSIGNED_SHORT:
297 type = init_type (TYPE_CODE_BOOL,
298 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
299 TYPE_FLAG_UNSIGNED, "logical*2", objfile);
300 break;
301 case FT_INTEGER:
302 type = init_type (TYPE_CODE_INT,
303 TARGET_INT_BIT / TARGET_CHAR_BIT,
304 0, "integer*4", objfile);
305 break;
306 case FT_SIGNED_INTEGER:
307 type = init_type (TYPE_CODE_INT,
308 TARGET_INT_BIT / TARGET_CHAR_BIT,
309 0, "integer", objfile); /* FIXME -fnf */
310 break;
311 case FT_UNSIGNED_INTEGER:
312 type = init_type (TYPE_CODE_BOOL,
313 TARGET_INT_BIT / TARGET_CHAR_BIT,
314 TYPE_FLAG_UNSIGNED, "logical*4", objfile);
315 break;
316 case FT_FIXED_DECIMAL:
317 type = init_type (TYPE_CODE_INT,
318 TARGET_INT_BIT / TARGET_CHAR_BIT,
319 0, "fixed decimal", objfile);
320 break;
321 case FT_LONG:
322 type = init_type (TYPE_CODE_INT,
323 TARGET_LONG_BIT / TARGET_CHAR_BIT,
324 0, "long", objfile);
325 break;
326 case FT_SIGNED_LONG:
327 type = init_type (TYPE_CODE_INT,
328 TARGET_LONG_BIT / TARGET_CHAR_BIT,
329 0, "long", objfile); /* FIXME -fnf */
330 break;
331 case FT_UNSIGNED_LONG:
332 type = init_type (TYPE_CODE_INT,
333 TARGET_LONG_BIT / TARGET_CHAR_BIT,
334 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
335 break;
336 case FT_LONG_LONG:
337 type = init_type (TYPE_CODE_INT,
338 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
339 0, "long long", objfile);
340 break;
341 case FT_SIGNED_LONG_LONG:
342 type = init_type (TYPE_CODE_INT,
343 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
344 0, "signed long long", objfile);
345 break;
346 case FT_UNSIGNED_LONG_LONG:
347 type = init_type (TYPE_CODE_INT,
348 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
349 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
350 break;
351 case FT_FLOAT:
352 type = init_type (TYPE_CODE_FLT,
353 TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
354 0, "real", objfile);
355 break;
356 case FT_DBL_PREC_FLOAT:
357 type = init_type (TYPE_CODE_FLT,
358 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
359 0, "real*8", objfile);
360 break;
361 case FT_FLOAT_DECIMAL:
362 type = init_type (TYPE_CODE_FLT,
363 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
364 0, "floating decimal", objfile);
365 break;
366 case FT_EXT_PREC_FLOAT:
367 type = init_type (TYPE_CODE_FLT,
368 TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
369 0, "real*16", objfile);
370 break;
371 case FT_COMPLEX:
372 type = init_type (TYPE_CODE_COMPLEX,
373 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
374 0, "complex*8", objfile);
375 TYPE_TARGET_TYPE (type) = builtin_type_f_real;
376 break;
377 case FT_DBL_PREC_COMPLEX:
378 type = init_type (TYPE_CODE_COMPLEX,
379 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
380 0, "complex*16", objfile);
381 TYPE_TARGET_TYPE (type) = builtin_type_f_real_s8;
382 break;
383 case FT_EXT_PREC_COMPLEX:
384 type = init_type (TYPE_CODE_COMPLEX,
385 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
386 0, "complex*32", objfile);
387 TYPE_TARGET_TYPE (type) = builtin_type_f_real_s16;
388 break;
389 default:
390 /* FIXME: For now, if we are asked to produce a type not in this
391 language, create the equivalent of a C integer type with the
392 name "<?type?>". When all the dust settles from the type
393 reconstruction work, this should probably become an error. */
394 type = init_type (TYPE_CODE_INT,
395 TARGET_INT_BIT / TARGET_CHAR_BIT,
396 0, "<?type?>", objfile);
397 warning ("internal error: no F77 fundamental type %d", typeid);
398 break;
399 }
400 return (type);
401 }
402 \f
403
404 /* Table of operators and their precedences for printing expressions. */
405
406 static const struct op_print f_op_print_tab[] =
407 {
408 {"+", BINOP_ADD, PREC_ADD, 0},
409 {"+", UNOP_PLUS, PREC_PREFIX, 0},
410 {"-", BINOP_SUB, PREC_ADD, 0},
411 {"-", UNOP_NEG, PREC_PREFIX, 0},
412 {"*", BINOP_MUL, PREC_MUL, 0},
413 {"/", BINOP_DIV, PREC_MUL, 0},
414 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
415 {"MOD", BINOP_REM, PREC_MUL, 0},
416 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
417 {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
418 {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
419 {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
420 {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
421 {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
422 {".LE.", BINOP_LEQ, PREC_ORDER, 0},
423 {".GE.", BINOP_GEQ, PREC_ORDER, 0},
424 {".GT.", BINOP_GTR, PREC_ORDER, 0},
425 {".LT.", BINOP_LESS, PREC_ORDER, 0},
426 {"**", UNOP_IND, PREC_PREFIX, 0},
427 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
428 {NULL, 0, 0, 0}
429 };
430 \f
431 struct type **CONST_PTR (f_builtin_types[]) =
432 {
433 &builtin_type_f_character,
434 &builtin_type_f_logical,
435 &builtin_type_f_logical_s1,
436 &builtin_type_f_logical_s2,
437 &builtin_type_f_integer,
438 &builtin_type_f_integer_s2,
439 &builtin_type_f_real,
440 &builtin_type_f_real_s8,
441 &builtin_type_f_real_s16,
442 &builtin_type_f_complex_s8,
443 &builtin_type_f_complex_s16,
444 #if 0
445 &builtin_type_f_complex_s32,
446 #endif
447 &builtin_type_f_void,
448 0
449 };
450
451 /* This is declared in c-lang.h but it is silly to import that file for what
452 is already just a hack. */
453 extern int c_value_print (struct value *, struct ui_file *, int,
454 enum val_prettyprint);
455
456 const struct language_defn f_language_defn =
457 {
458 "fortran",
459 language_fortran,
460 f_builtin_types,
461 range_check_on,
462 type_check_on,
463 f_parse, /* parser */
464 f_error, /* parser error function */
465 evaluate_subexp_standard,
466 f_printchar, /* Print character constant */
467 f_printstr, /* function to print string constant */
468 f_emit_char, /* Function to print a single character */
469 f_create_fundamental_type, /* Create fundamental type in this language */
470 f_print_type, /* Print a type using appropriate syntax */
471 f_val_print, /* Print a value using appropriate syntax */
472 c_value_print, /* FIXME */
473 {"", "", "", ""}, /* Binary format info */
474 {"0%o", "0", "o", ""}, /* Octal format info */
475 {"%d", "", "d", ""}, /* Decimal format info */
476 {"0x%x", "0x", "x", ""}, /* Hex format info */
477 f_op_print_tab, /* expression operators for printing */
478 0, /* arrays are first-class (not c-style) */
479 1, /* String lower bound */
480 &builtin_type_f_character, /* Type of string elements */
481 LANG_MAGIC
482 };
483
484 void
485 _initialize_f_language (void)
486 {
487 builtin_type_f_void =
488 init_type (TYPE_CODE_VOID, 1,
489 0,
490 "VOID", (struct objfile *) NULL);
491
492 builtin_type_f_character =
493 init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
494 0,
495 "character", (struct objfile *) NULL);
496
497 builtin_type_f_logical_s1 =
498 init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
499 TYPE_FLAG_UNSIGNED,
500 "logical*1", (struct objfile *) NULL);
501
502 builtin_type_f_integer_s2 =
503 init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
504 0,
505 "integer*2", (struct objfile *) NULL);
506
507 builtin_type_f_logical_s2 =
508 init_type (TYPE_CODE_BOOL, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
509 TYPE_FLAG_UNSIGNED,
510 "logical*2", (struct objfile *) NULL);
511
512 builtin_type_f_integer =
513 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
514 0,
515 "integer", (struct objfile *) NULL);
516
517 builtin_type_f_logical =
518 init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
519 TYPE_FLAG_UNSIGNED,
520 "logical*4", (struct objfile *) NULL);
521
522 builtin_type_f_real =
523 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
524 0,
525 "real", (struct objfile *) NULL);
526
527 builtin_type_f_real_s8 =
528 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
529 0,
530 "real*8", (struct objfile *) NULL);
531
532 builtin_type_f_real_s16 =
533 init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
534 0,
535 "real*16", (struct objfile *) NULL);
536
537 builtin_type_f_complex_s8 =
538 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
539 0,
540 "complex*8", (struct objfile *) NULL);
541 TYPE_TARGET_TYPE (builtin_type_f_complex_s8) = builtin_type_f_real;
542
543 builtin_type_f_complex_s16 =
544 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
545 0,
546 "complex*16", (struct objfile *) NULL);
547 TYPE_TARGET_TYPE (builtin_type_f_complex_s16) = builtin_type_f_real_s8;
548
549 /* We have a new size == 4 double floats for the
550 complex*32 data type */
551
552 builtin_type_f_complex_s32 =
553 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
554 0,
555 "complex*32", (struct objfile *) NULL);
556 TYPE_TARGET_TYPE (builtin_type_f_complex_s32) = builtin_type_f_real_s16;
557
558 builtin_type_string =
559 init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
560 0,
561 "character string", (struct objfile *) NULL);
562
563 add_language (&f_language_defn);
564 }
565
566 #if 0
567 static SAVED_BF_PTR
568 allocate_saved_bf_node (void)
569 {
570 SAVED_BF_PTR new;
571
572 new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
573 return (new);
574 }
575
576 static SAVED_FUNCTION *
577 allocate_saved_function_node (void)
578 {
579 SAVED_FUNCTION *new;
580
581 new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
582 return (new);
583 }
584
585 static SAVED_F77_COMMON_PTR
586 allocate_saved_f77_common_node (void)
587 {
588 SAVED_F77_COMMON_PTR new;
589
590 new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
591 return (new);
592 }
593
594 static COMMON_ENTRY_PTR
595 allocate_common_entry_node (void)
596 {
597 COMMON_ENTRY_PTR new;
598
599 new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
600 return (new);
601 }
602 #endif
603
604 SAVED_F77_COMMON_PTR head_common_list = NULL; /* Ptr to 1st saved COMMON */
605 SAVED_F77_COMMON_PTR tail_common_list = NULL; /* Ptr to last saved COMMON */
606 SAVED_F77_COMMON_PTR current_common = NULL; /* Ptr to current COMMON */
607
608 #if 0
609 static SAVED_BF_PTR saved_bf_list = NULL; /* Ptr to (.bf,function)
610 list */
611 static SAVED_BF_PTR saved_bf_list_end = NULL; /* Ptr to above list's end */
612 static SAVED_BF_PTR current_head_bf_list = NULL; /* Current head of above list
613 */
614
615 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
616 in macros */
617
618 /* The following function simply enters a given common block onto
619 the global common block chain */
620
621 static void
622 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
623 {
624 SAVED_F77_COMMON_PTR tmp;
625 char *c, *local_copy_func_stab;
626
627 /* If the COMMON block we are trying to add has a blank
628 name (i.e. "#BLNK_COM") then we set it to __BLANK
629 because the darn "#" character makes GDB's input
630 parser have fits. */
631
632
633 if (STREQ (name, BLANK_COMMON_NAME_ORIGINAL) ||
634 STREQ (name, BLANK_COMMON_NAME_MF77))
635 {
636
637 free (name);
638 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
639 strcpy (name, BLANK_COMMON_NAME_LOCAL);
640 }
641
642 tmp = allocate_saved_f77_common_node ();
643
644 local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
645 strcpy (local_copy_func_stab, func_stab);
646
647 tmp->name = xmalloc (strlen (name) + 1);
648
649 /* local_copy_func_stab is a stabstring, let us first extract the
650 function name from the stab by NULLing out the ':' character. */
651
652
653 c = NULL;
654 c = strchr (local_copy_func_stab, ':');
655
656 if (c)
657 *c = '\0';
658 else
659 error ("Malformed function STAB found in add_common_block()");
660
661
662 tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
663
664 strcpy (tmp->owning_function, local_copy_func_stab);
665
666 strcpy (tmp->name, name);
667 tmp->offset = offset;
668 tmp->next = NULL;
669 tmp->entries = NULL;
670 tmp->secnum = secnum;
671
672 current_common = tmp;
673
674 if (head_common_list == NULL)
675 {
676 head_common_list = tail_common_list = tmp;
677 }
678 else
679 {
680 tail_common_list->next = tmp;
681 tail_common_list = tmp;
682 }
683 }
684 #endif
685
686 /* The following function simply enters a given common entry onto
687 the "current_common" block that has been saved away. */
688
689 #if 0
690 static void
691 add_common_entry (struct symbol *entry_sym_ptr)
692 {
693 COMMON_ENTRY_PTR tmp;
694
695
696
697 /* The order of this list is important, since
698 we expect the entries to appear in decl.
699 order when we later issue "info common" calls */
700
701 tmp = allocate_common_entry_node ();
702
703 tmp->next = NULL;
704 tmp->symbol = entry_sym_ptr;
705
706 if (current_common == NULL)
707 error ("Attempt to add COMMON entry with no block open!");
708 else
709 {
710 if (current_common->entries == NULL)
711 {
712 current_common->entries = tmp;
713 current_common->end_of_entries = tmp;
714 }
715 else
716 {
717 current_common->end_of_entries->next = tmp;
718 current_common->end_of_entries = tmp;
719 }
720 }
721 }
722 #endif
723
724 /* This routine finds the first encountred COMMON block named "name" */
725
726 #if 0
727 static SAVED_F77_COMMON_PTR
728 find_first_common_named (char *name)
729 {
730
731 SAVED_F77_COMMON_PTR tmp;
732
733 tmp = head_common_list;
734
735 while (tmp != NULL)
736 {
737 if (STREQ (tmp->name, name))
738 return (tmp);
739 else
740 tmp = tmp->next;
741 }
742 return (NULL);
743 }
744 #endif
745
746 /* This routine finds the first encountred COMMON block named "name"
747 that belongs to function funcname */
748
749 SAVED_F77_COMMON_PTR
750 find_common_for_function (char *name, char *funcname)
751 {
752
753 SAVED_F77_COMMON_PTR tmp;
754
755 tmp = head_common_list;
756
757 while (tmp != NULL)
758 {
759 if (STREQ (tmp->name, name) && STREQ (tmp->owning_function, funcname))
760 return (tmp);
761 else
762 tmp = tmp->next;
763 }
764 return (NULL);
765 }
766
767
768 #if 0
769
770 /* The following function is called to patch up the offsets
771 for the statics contained in the COMMON block named
772 "name." */
773
774 static void
775 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
776 {
777 COMMON_ENTRY_PTR entry;
778
779 blk->offset = offset; /* Keep this around for future use. */
780
781 entry = blk->entries;
782
783 while (entry != NULL)
784 {
785 SYMBOL_VALUE (entry->symbol) += offset;
786 SYMBOL_SECTION (entry->symbol) = secnum;
787
788 entry = entry->next;
789 }
790 blk->secnum = secnum;
791 }
792
793 /* Patch all commons named "name" that need patching.Since COMMON
794 blocks occur with relative infrequency, we simply do a linear scan on
795 the name. Eventually, the best way to do this will be a
796 hashed-lookup. Secnum is the section number for the .bss section
797 (which is where common data lives). */
798
799 static void
800 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
801 {
802
803 SAVED_F77_COMMON_PTR tmp;
804
805 /* For blank common blocks, change the canonical reprsentation
806 of a blank name */
807
808 if ((STREQ (name, BLANK_COMMON_NAME_ORIGINAL)) ||
809 (STREQ (name, BLANK_COMMON_NAME_MF77)))
810 {
811 free (name);
812 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
813 strcpy (name, BLANK_COMMON_NAME_LOCAL);
814 }
815
816 tmp = head_common_list;
817
818 while (tmp != NULL)
819 {
820 if (COMMON_NEEDS_PATCHING (tmp))
821 if (STREQ (tmp->name, name))
822 patch_common_entries (tmp, offset, secnum);
823
824 tmp = tmp->next;
825 }
826 }
827 #endif
828
829 /* This macro adds the symbol-number for the start of the function
830 (the symbol number of the .bf) referenced by symnum_fcn to a
831 list. This list, in reality should be a FIFO queue but since
832 #line pragmas sometimes cause line ranges to get messed up
833 we simply create a linear list. This list can then be searched
834 first by a queueing algorithm and upon failure fall back to
835 a linear scan. */
836
837 #if 0
838 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
839 \
840 if (saved_bf_list == NULL) \
841 { \
842 tmp_bf_ptr = allocate_saved_bf_node(); \
843 \
844 tmp_bf_ptr->symnum_bf = (bf_sym); \
845 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
846 tmp_bf_ptr->next = NULL; \
847 \
848 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
849 saved_bf_list_end = tmp_bf_ptr; \
850 } \
851 else \
852 { \
853 tmp_bf_ptr = allocate_saved_bf_node(); \
854 \
855 tmp_bf_ptr->symnum_bf = (bf_sym); \
856 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
857 tmp_bf_ptr->next = NULL; \
858 \
859 saved_bf_list_end->next = tmp_bf_ptr; \
860 saved_bf_list_end = tmp_bf_ptr; \
861 }
862 #endif
863
864 /* This function frees the entire (.bf,function) list */
865
866 #if 0
867 static void
868 clear_bf_list (void)
869 {
870
871 SAVED_BF_PTR tmp = saved_bf_list;
872 SAVED_BF_PTR next = NULL;
873
874 while (tmp != NULL)
875 {
876 next = tmp->next;
877 free (tmp);
878 tmp = next;
879 }
880 saved_bf_list = NULL;
881 }
882 #endif
883
884 int global_remote_debug;
885
886 #if 0
887
888 static long
889 get_bf_for_fcn (long the_function)
890 {
891 SAVED_BF_PTR tmp;
892 int nprobes = 0;
893
894 /* First use a simple queuing algorithm (i.e. look and see if the
895 item at the head of the queue is the one you want) */
896
897 if (saved_bf_list == NULL)
898 internal_error ("cannot get .bf node off empty list");
899
900 if (current_head_bf_list != NULL)
901 if (current_head_bf_list->symnum_fcn == the_function)
902 {
903 if (global_remote_debug)
904 fprintf (stderr, "*");
905
906 tmp = current_head_bf_list;
907 current_head_bf_list = current_head_bf_list->next;
908 return (tmp->symnum_bf);
909 }
910
911 /* If the above did not work (probably because #line directives were
912 used in the sourcefile and they messed up our internal tables) we now do
913 the ugly linear scan */
914
915 if (global_remote_debug)
916 fprintf (stderr, "\ndefaulting to linear scan\n");
917
918 nprobes = 0;
919 tmp = saved_bf_list;
920 while (tmp != NULL)
921 {
922 nprobes++;
923 if (tmp->symnum_fcn == the_function)
924 {
925 if (global_remote_debug)
926 fprintf (stderr, "Found in %d probes\n", nprobes);
927 current_head_bf_list = tmp->next;
928 return (tmp->symnum_bf);
929 }
930 tmp = tmp->next;
931 }
932
933 return (-1);
934 }
935
936 static SAVED_FUNCTION_PTR saved_function_list = NULL;
937 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
938
939 static void
940 clear_function_list (void)
941 {
942 SAVED_FUNCTION_PTR tmp = saved_function_list;
943 SAVED_FUNCTION_PTR next = NULL;
944
945 while (tmp != NULL)
946 {
947 next = tmp->next;
948 free (tmp);
949 tmp = next;
950 }
951
952 saved_function_list = NULL;
953 }
954 #endif
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